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<BODY bgcolor=#F0F0F0 text=#000000 link=#0000ff vlink=#C000C0 alink=#ff0000><A NAME=top></A>
<h5><a href="https://github.com/urbanjost/M_strings">[UP]</a></h5>
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<H1><HR><I>Manual Reference Pages &nbsp;-&nbsp;</I><NOBR>isalnum (3m_strings)</NOBR><HR></H1>
</CENTER>
<A name=0>

     <H3>NAME</H3>

</A>
<BLOCKQUOTE>
isalnum,isalpha,iscntrl,isdigit,isgraph,islower,
isprint,ispunct,isspace,isupper,
<B>isascii,isblank,isxdigit</B>(3f) - [M_strings:COMPARE] test membership in
subsets of ASCII set
(LICENSE:PD)
<P>
</BLOCKQUOTE>
<A name=contents></A><H3>CONTENTS</H3></A>
<BLOCKQUOTE>
<A HREF=#1>Synopsis</A><BR>
<A HREF=#2>Description</A><BR>
<A HREF=#3>Examples</A><BR>
<A HREF=#4>Author</A><BR>
<A HREF=#5>License</A><BR>
</BLOCKQUOTE>
<A name=6>

     <H3>SYNOPSIS</H3>

</A>
<BLOCKQUOTE>
Where "FUNCNAME" is one of the function names in the <I>group</I>, the
functions are defined by
<P>
<PRE>
    elemental function FUNCNAME(onechar)
    character,intent(in) :: onechar
    logical              :: FUNC_NAME
</PRE>
</BLOCKQUOTE>
<A name=2>

     <H3>DESCRIPTION</H3>

</A>
<BLOCKQUOTE>
<P>
These elemental functions test if a character belongs to various
subsets of the ASCII character set.
<TABLE cellpadding=3><!-- tsb: These elemental functions test if a character belongs to various
 -->
<TR></TR><TR></TR>
<TR valign=top><TD colspan=2>
<B>isalnum</B> </TD></TR><TR valign=top><TD width=6%>&nbsp;</TD><TD>
returns .true. if character is a letter (a-z,A-Z)
or digit (0-9)
</TD></TR>
<TR valign=top><TD colspan=2>
<B>isalpha</B> </TD></TR><TR valign=top><TD width=6%>&nbsp;</TD><TD>
returns .true. if character is a letter and
</TD></TR>
<TR valign=top><TD colspan=2>
<B>isascii</B> </TD></TR><TR valign=top><TD width=6%>&nbsp;</TD><TD>
returns .true. if character is in the range <B>char</B>(0)
to <B>char</B>(127)
</TD></TR>
<TR valign=top><TD colspan=2>
<B>isblank</B> </TD></TR><TR valign=top><TD width=6%>&nbsp;</TD><TD>
returns .true. if character is a blank (space or
horizontal tab).
</TD></TR>
<TR valign=top><TD colspan=2>
<B>iscntrl</B> </TD></TR><TR valign=top><TD width=6%>&nbsp;</TD><TD>
returns .true. if character is a delete character or
ordinary control character (0x7F or 0x00-0x1F).
</TD></TR>
<TR valign=top><TD colspan=2>
<B>isdigit</B> </TD></TR><TR valign=top><TD width=6%>&nbsp;</TD><TD>
returns .true. if character is a digit (0,1,&#46;&#46;&#46;,9)
and .false. otherwise
</TD></TR>
<TR valign=top><TD colspan=2>
<B>isgraph</B> </TD></TR><TR valign=top><TD width=6%>&nbsp;</TD><TD>
returns .true. if character is a printable ASCII
character excluding space
</TD></TR>
<TR valign=top><TD colspan=2>
<B>islower</B> </TD></TR><TR valign=top><TD width=6%>&nbsp;</TD><TD>
returns .true. if character is a miniscule letter (a-z)
</TD></TR>
<TR valign=top><TD colspan=2>
<B>isprint</B> </TD></TR><TR valign=top><TD width=6%>&nbsp;</TD><TD>
returns .true. if character is a printable ASCII character
</TD></TR>
<TR valign=top><TD colspan=2>
<B>ispunct</B> </TD></TR><TR valign=top><TD width=6%>&nbsp;</TD><TD>
returns .true. if character is a printable punctuation
character (isgraph(c) && !isalnum(c)).
</TD></TR>
<TR valign=top><TD colspan=2>
<B>isspace</B> </TD></TR><TR valign=top><TD width=6%>&nbsp;</TD><TD>
returns .true. if character is a null, space, tab,
carriage return, new line, vertical tab, or formfeed
</TD></TR>
<TR valign=top><TD colspan=2>
<B>isupper</B> </TD></TR><TR valign=top><TD width=6%>&nbsp;</TD><TD>
returns .true. if character is an uppercase letter (A-Z)
</TD></TR>
<TR valign=top><TD colspan=2>
<B>isxdigit</B> </TD></TR><TR valign=top><TD width=6%>&nbsp;</TD><TD>
returns .true. if character is a hexadecimal digit
(0-9, a-f, or A-F).
</TD></TR>
<TR></TR></TABLE></BLOCKQUOTE>
<A name=3>

     <H3>EXAMPLES</H3>

</A>
<BLOCKQUOTE>
Sample Program:
<P>
<PRE>
   program demo_isdigit
<P>
    use M_strings, only : isdigit, isspace, switch
    implicit none
    character(len=10),allocatable :: string(:)
    integer                       :: i
       string=[&
       & &#146;1 2 3 4 5 &#146; ,&
       & &#146;letters   &#146; ,&
       & &#146;1234567890&#146; ,&
       & &#146;both 8787 &#146; ]
       ! if string is nothing but digits and whitespace return .true.
       do i=1,size(string)
          write(*,&#146;(a)&#146;,advance=&#146;no&#146;)&#146;For string[&#146;//string(i)//&#146;]&#146;
          write(*,*) &
          all(isdigit(switch(string(i))) .or. &
          & isspace(switch(string(i))))
       enddo
<P>
    end program demo_isdigit
<P>
</PRE>
Expected output:
<P>
<PRE>
   For string[1 2 3 4 5 ] T
   For string[letters   ] F
   For string[1234567890] T
   For string[both 8787 ] F
<P>
</PRE>
</BLOCKQUOTE>
<A name=4>

     <H3>AUTHOR</H3>

</A>
<BLOCKQUOTE>
John S. Urban
</BLOCKQUOTE>
<A name=5>

     <H3>LICENSE</H3>

</A>
<BLOCKQUOTE>
Public Domain
</BLOCKQUOTE>
<P><HR>
<TABLE width=100%><TR> <TD width=33%><I>Nemo Release 3.1</I></TD> <TD width=33% align=center>isalnum (3m_strings)</TD> <TD align=right width=33%><I>April 30, 2022</I></TD> </TR></TABLE><FONT SIZE=-1>Generated by <A HREF="http://www.squarebox.co.uk/download/manServer.shtml">manServer 1.08</A> from fa47d7cf-1518-418b-9f88-46bf48bf2dc3 using man macros.</FONT>
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